Wrench.



H. TARBU'SH.

WRENCH.

APPLICATION 'HLED OCT. 26. 1914.

Patented Oct, 23, 191?.

HUBERT TABBUSH, OF .LAKEWQQE, nix-10.. ssIsNdR oEoNE- A E T0 GEORGE OB R BARKER; .oE ,LAKEW QD. .OHIQ- WE CE- To all whom it may concern:

Be it known that HUBERT 'T-ARBUsH, residing at Lakewood, in the county of Guyahoga, State of-Ohio, have invented new 1 and nsefnl l nprovenlents in -Wre; rfches," of which thefo'llowingisaspecification? My invention which 5 will be hereinafter fully set forth [and claimed 'rel-ates *to wrenches. V i

Theobject of my invention is awrench having a movable clamping ja'w'that-ca'r'i be quickly adjusted and antomatically itightened andlocked'; also a detachable-pip'e'j'aw for the same that can be readily placed or removed and will re tain its position whn'in use.

Figurel is aside elevation of -my inn-r proved wrench, showing the clamping dear and-the pipej aw in position-and one-part in section;

"Fig. 2 is a. bottom-view of the same. I

Fig. 3 is a partial=top yiew, showing the plp8ijafVV."

"Fig.4 is a perspective View. of the movable claniping'jaw.

"Fig. 5 s ahorizontzil section on=line'-5-5,

Figil, showing the'clampingjaw gear.

-Fig. dis a transverse's'ectiorf online' 6 -6, Fig. 1, in the direction offlthe arrow; l

Fig. 7' is an end (View, (shank end) Fig-Sis an enaview of'=*the adjnsting screw, showing-thesiinkratchetiteethl Fig. 9 is a'tran'svers e section on-l in'e 9-9,

Fig. '10 is a horizontal section on line 10 10,'Figs.'1,7and-9k c i Fig. 11 is a separate -view, inperspect-ive, ofthe locking device for the-adjusting'screw. Fig." is a perspective View of the de- ,tachable' pipee jaw, and

Figure is a detail of the-plunger inthe PiPejaw. "1

- The shank, A, carries'the finedjaw, B, as

usnal. 'Ifhehand-end of-the shankil prefer to form with sunk panelson' its sides as shown at a. 'The bottom 'edge of thesh'ank, fora part, of its length near "theifixed j aw, is formed with beveled rack teethfal, Inade angular to conform with [the thread of the adj listing screw with which "they" will gear.

' o, Figs-1,2, 4,5,36,7', send- 10, is thefniovable clamplngjaw,- slotted=as at 2, tore'ceiye V Specification .of I e tters l atent. l ?at;ented 23, 191.7. ilpplication' i i led October 26,1914. Seria1 No.'8 68,64 3.

and slide on theshank A; it provides acv commodation for "the adjusting and clamping'igear. For thispnrpose it is formed with a gap =3linits lower part, said gap having-recesses land 5 lengtheningthe-saine in its upper part-sfor 1 the reception of .the adjnsting screw and thus forming in its lower lpartitwo' inwardly projecting shoulders, 0 and '0 iform'edwith-recesses 6 and 7 forumceivingwan'd forming bearings for :the pintlesoftheadjustihg screw. :Themecess' .6 is .Ina'dewider near .the iface of the gap, to

affordaccommodation for a coil spring,

with :alaterali slot, '6 ,fto hold. one end of said spring.

" D, :Figs. .1, -2,.5,.6 and -8,.is the ad justing screw gearing with 1 the: rack :teeth a in the shank A and formed with pintles (land 6Z the latter short andthe formerlong, .soas to pass through the coil spring, D

:This

spring has one end, al bent and inserted "into thescrew body (at 8, Fig.6) the" other isjheld in the slot 6 and te'nds to 'rotate'the screw in the-direction of t'hearrowyFigs. :1

and 2, and throwit i'nto' gear-'withtl e rack.

them, one of thefaces being finted longitn- "dinally' tO 'afiord a bettergripfor'the fingers." {One end of the screw body, the one having the short-pintle d has ratchet teeth l2, su'nk into it, as shown in Fig. 8 and: in-

dicated in Figs. -1 and 10. Theseteeth are engaged byfaudog, "E, embedded and held slidingly inthe adjacent part of the movable jaw Cand close to"';itsglb'ottorn surface, as

shown in Figsnl, 2, 4, 7, 9, -10 and 11. It is provided with a lug,' e," proj ectin'gbelow the lowersurface of the. part 0 and-adapted to engage a check,l4, forming part of a slot 13 -(-'Fig. 2)' in said -p'art. C and being projected by a spring, E secnredtoa-plug 0 in the end-of thebore. Said plug'forins'part' of a "stern, e Q fitting-t-he outer endof the sl0t 13 snugly; theplugbeinglheld in position by riveting or by a turn' bntton,E yas shown in Figs. 1, 2, 5, 7, 9 and 10. The spring E presses the dog'into engagement with the ratchet 12 andits' end engaging a transverse slot at??? inns?- E1 31 fifths eg? -r r to the latter a slight rotary movement, limited by the lug e and the slot and check 13 and 14. Upon turning the adjusting screw D against the tension of its actuating spring D the incline of the teeth 12 rides against the incline of the locking dog E, forcing the ment with the ratchet teeth 12, until said lug is released manually, from its retaining check 14. This device facilitates the use of thenwrench in close quarters, when there may not be room for the hand to turn the screw.

A pin, a (Figs. 1,2 and?) is inserted in the handle end of the shank A to prevent the movable jaw parting company with it.

F is the removable pipe jaw, shown in Figs. 1, 2, 3 and 12. The solid operative part, 7, has its back straight to fit the face of the fixed jaw B, its face f, beveled and serrated and. made somewhat shorter than the length of the jaw B from the lower edge of the shank A to the tip, so that the square shoulder, f forming the top thereof, leaves room between it and the lower edge of the shank A when the jaw is placed into position. Into this shoulder is inserted a shouldered movable pin, F the shoulder passing within the bore which forms its seat and the reduced part, surrounded by a coiled spring which tends to push the pin outward and cause it to act as a plunger impinging on the lower surface of the shank A. From the shoulder f extends at each side to the head of the jaw B, a prong, f its back in line with-the back of the part 7, extended at a right angle, by an extension f over the head of the jaw and terminating ina hooked lug P, so as to clip said head closely. The distance from the inner or contact edges of the arms 7 to the shoulder f is at least as much greater than the lengthof the hook lugs i so that the jaw F may be raised against the pressure of the plunger F until the hooks clear the head of thefixed jaw, when the jaw F may be disengaged from its position on the fixed aw. I

l/Vhile the movable jaw F is in its position on the fixed jaw B, as shown in Figs. 1, 2 and 3, the plunger F holds it. there and forms an elastic seat which assists in relaxing' the grip upon the pipe when it is desired-to reverse the action or remove the wrench.

a The operation of the wrench does not require much further elucidation. The adjusting screw D is turned againstthe pres sure of the spring D until the plain face 9 faces the rack (4 The jaw C may then be slid along the shank A in any direction and set against a nut or other object to be oper ated upon; the adjusting screw is then released and the spring D will turn it back and throw the threads into gear with the rack. The latter will allow the screw to turn until set close and lost motion is taken up and then hold it automatically.

The operationof the removable pipe jaw needs no further explanation after what has been said in connection with the description of the same. v v

I claim as my invention 1. In awrench, the combination of a shank having rack teeth, a fixed jaw on one end of said shank, a movable jaw slotted to slide on said shank and having a gap in its lower part, said gap recessed in its upper part and having bearings for pintles in the faces of the lower part, a pintled adjusting screw journaleda in said bearings and gearing into the rack on the shank and having the threadson two adjacent sides cut away to form flat faces at an approximately right angle to each other, a spring coiled upon one of the pintles of said screw with one end held in the enlarged pintle bearing and the other end bent and inserted inthe end of the screw body and tending to throw the screw threads into gear with the rack, ratchet teeth in the other end of the screw body, a dog embedded in and held slidingly in the lower part of the movable jaw, a lug on said dog projecting below the surface of the part in which it is embedded and moving in a checked slot and a spring at one endof said dog pressing the same into engagement with said ratchet,

substantially as set forth. 7 r J 2. In a wrench having a rack-shankwith a fixed jaw in combination with a movable jaw having a gap, an adjusting screw pintled within the gap of said jaw, a spring on one of the pintles tending to turn the screw into gear with the rack on the shank, a

ratchet sunk in one end of the screw body, a dog slidingly embedded in said jaw opposite said ratchet, a spring at the end of said dog pressing thesame into engagement, a lug on said dog projecting beyond the surface in which said dog is embedded and said surface being slotted and a check formed in said slot engaging said lug whenthe dog isretracted, substantially as set forth.

3.111 a wrench, the combination of-qa shank having rack teeth, a fixed jaw on one end of said shank, a removable serrated attachment resiliently mounted 011 said fixed jaw and adapted to have slight movement along said fixed jaw, a movable jawhaving a gap, an adjusting screw pintled w1th1n the gap of sald jaw,-a.spr1ng on one of said pintles tending to turn the screw into gear with the rack, a ratchet sunk into said lug when said dog is in its retracted one end of the screw body, a dog slidably position. 10 embedded in said jaw opposite said ratchet, In testimony whereof I affix my signature,

a spring at the end of said dog pressing the in presence of two subscribing witnesses.

same into engagement, a lug on said dog HUBERT TARBUSH. projecting beyond the surface in which said Witnesses:

dog is embedded, said surface being slotted F. E. COTTIER,

and a check formed in such slot engaging WM. J. TARBUsH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

